The "Black Arch" guards the entrance to the picturesque Glens of Antrim.

The artwork is a community's ode to the "father of Irish tourism."

This giant sculpture is both loved and disliked by the local community.

A painting to honor the oldest reserve squadron in the Royal Air Force.

Step into Narnia at this small park featuring statues from "The Lion, the Witch, and the Wardrobe."

A restored World War II Churchill Mark VII Tank now stands guard in Carrickfergus.

These sculptures honor the knights who once called Carrickfergus Castle their stronghold.

Commemorating the landing of William of Orange with his European army on their way to the Battle of the Boyne.

This mine was once used to defend the coast from attack during World War II.

A tiny, heartwarming piece of art hiding in plain sight.

The construction of this bridge dates back to the 15th century.

The small bright red pillar survived the 1996 Manchester bombing virtually unscathed.

An abandoned canal route lies hidden under the streets of Manchester.

The city of Manchester quietly unveiled this tribute to a 19th-century massacre.

Manchester salvaged this sculpture of the adopted Mancunian when it was no longer wanted in Ukraine.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

A little-known castle set in a nature reserve.

This haunting sculpture was created as a statement on the mechanized warfare of the First World War.

It's a mystery why these remains were found with no traces of their bodies in sight.

The gigantic skull of a long-extinct species that once roamed the forests of England and Ireland.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

A measuring mishap led to these artificial stone ladies losing their stomachs.

A tiny replica of the iconic London landmark hides on the side of the steel structure.

A closed London rail station created to cart away the dead still bears the marks of attempts to make it less morbid.